Near the drill bit local buck short
A near-drill, local technology, applied in the direction of drill pipe, drill pipe, drilling equipment, etc., can solve the problems of immature conditions for large-scale application, high equipment capacity requirements, and prone to well collapse, etc., to achieve simple structure and reduce breakage Intensity, the effect of increasing the drilling speed
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[0020] In order to have a clearer understanding of the technical features, purposes and effects of the present invention, the specific implementation manners of the present invention will now be described with reference to the accompanying drawings.
[0021] Such as figure 1 As shown, the near-drill local pressure-reducing short circuit 100 of the present invention includes an upper joint 1, a spiral upflow generator 2 and a lower joint 3 from top to bottom; the upper end of the upper joint 1 is open. In this embodiment, The inner wall of the upper end of the upper joint 1 is provided with a first connecting thread 13, and the upper joint 1 is connected with a drill collar (not shown in the figure) through the first connecting thread 13; the inner of the upper joint 1 is fixedly connected with a first torque transmission Block 4, the first torque transmission block 4 is provided with a first torque transmission through hole 41; the bottom of the upper joint 1 is provided with ...
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